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Materials 2017, 10(9), 1032; doi:10.3390/ma10091032

A Piezoresponse Force Microscopy Study of CaxBa1−xNb2O6 Single Crystals

1
Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141 Essen, Germany
2
Institute of Materials Science, University of Silesia, 40-007 Katowice, Poland
*
Author to whom correspondence should be addressed.
Received: 28 July 2017 / Revised: 27 August 2017 / Accepted: 31 August 2017 / Published: 5 September 2017
(This article belongs to the Special Issue Scanning Probe Microscopy of Ferroics)
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Abstract

Polar structures of CaxBa1−xNb2O6 (CBN100x) single crystals were investigated using piezoresponse force microscopy. Increasing Ca content results in decreasing domain size and enhancement of the polar disorder. For the composition with x = 0.32 the characteristic domain size is similar to that reported for relaxor Sr0.61Ba0.39Nb2O6 (SBN61). However, decay of an artificial macroscopic domain in CBN32 takes place below the macroscopic transition temperature, contrary to SBN61, where random fields stabilize it above the transition temperature. We can conclude that CBN with 0.26 ≤ x ≤ 0.32 does not display classical relaxor behavior and might be considered as a disordered ferroelectric. View Full-Text
Keywords: scanning probe microscopy; ferroics; domains; piezoresponse force microscopy; relaxors; (Ca, Ba) Nb2O6; tungsten bronze scanning probe microscopy; ferroics; domains; piezoresponse force microscopy; relaxors; (Ca, Ba) Nb2O6; tungsten bronze
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Shvartsman, V.V.; Gobeljic, D.; Dec, J.; Lupascu, D.C. A Piezoresponse Force Microscopy Study of CaxBa1−xNb2O6 Single Crystals. Materials 2017, 10, 1032.

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